package cn.tedu.sp06.fallback;

import cn.tedu.web.util.JsonResult;
import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.stereotype.Component;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;


@Component
public class OrderFB implements FallbackProvider{
 @Override
 public String getRoute(){
  return "order-service";
 }

 @Override
 public ClientHttpResponse fallbackResponse(String route,Throwable cause){
  return new ClientHttpResponse(){
   @Override
   public HttpStatus getStatusCode() throws IOException{
    return HttpStatus.INTERNAL_SERVER_ERROR;
   }

   @Override
   public int getRawStatusCode() throws IOException{
    return HttpStatus.INTERNAL_SERVER_ERROR.value();
   }

   @Override
   public String getStatusText() throws IOException{
    return HttpStatus.INTERNAL_SERVER_ERROR.getReasonPhrase();
   }

   @Override
   public void close(){

   }

   @Override
   public InputStream getBody() throws IOException{
    String json=JsonResult.err().code(500).msg("系统服务故障").toString();
    return new ByteArrayInputStream(json.getBytes("UTF-8"));
   }

   @Override
   public HttpHeaders getHeaders(){
    HttpHeaders h=new HttpHeaders();
    h.add("Content-Type","application/json;charset=UTF-8");
    return h;
   }
  };
 }
}
